*{
    margin: 0;
    padding: 0;
}
a{
    color: #333;
    text-decoration: none;
}
input,button{
    border: 0;
    outline: 0;
}
ul,li{
    list-style: none;
}

/* 设置根元素字体大小 */
html,body{
    font-size: 10px !important;
}

@media screen and (min-width:375px){
    html,body{
        font-size: 10px !important;
    }
}

@media screen and (min-width:414px){
    html,body{
        /* 10*414/375=11.04 */
        font-size: 11.04px !important;
    }
}

@media screen and (min-width:768px){
    html,body{
        /* 10*768/375=11.04 */
        font-size: 20.48px !important;
    }
}